improve the guides index (#2301)

Author: BohuTANG

docs/en/guides/00-products/index.md

@@ -26,11 +26,13 @@ en=
 
 **Here are some entries you might want to learn about**
 
-- **[SQL Reference](/sql)**: your swift-access guide for Databend essentials!
-- **[Data Unloading](../50-unload-data/index.md)**: Export data from Databend(Cloud).
-- **[External Functions](../54-query/04-external-function.md)**: Use external functions to extend Databend's capabilities.
-- **[Data Management](../57-data-management/index.md)**: Manage data in Databend(Cloud).
-- **[Benchmarks](../80-benchmark/index.md)**: Compare Databend Cloud performance with Snowflake on TPC-H SF100 benchmarks.
-- **[Accessing Data Lake](../51-access-data-lake/index.md)**: Databend presents a seamless integration with three robust Data Lake technologies—Apache Hive, Apache Iceberg, and Delta Lake.
-- **[Query Structures](../54-query/index.md)**: Databend supports diverse query structures to enhance your data querying experience
-- **[Performance Optimization](../55-performance/index.md)**: Databend supports the following features to optimize query performance across various scenarios
+- **[SQL Reference](/sql)**: Your swift-access guide for Databend essentials!
+- **[Connect to Databend](/guides/sql-clients)**: Connect with various SQL clients and programming languages.
+- **[Data Loading](/guides/load-data)**: Import data from various sources into Databend.
+- **[Data Unloading](/guides/unload-data)**: Export data from Databend to different formats.
+- **[External Functions](/guides/query/external-function)**: Extend Databend's capabilities with custom functions.
+- **[Databend AI and ML](/guides/ai-functions)**: Leverage AI capabilities in your data processing.
+- **[Data Management](/guides/data-management)**: Manage your data lifecycle effectively.
+- **[Data Lakehouse](/guides/access-data-lake)**: Seamless integration with Hive, Iceberg, and Delta Lake.
+- **[Performance Optimization](/guides/performance)**: Enhance query performance with various strategies.
+- **[Benchmarks](/guides/benchmark)**: Compare Databend performance with other data warehouses.

docs/en/guides/57-data-management/index.md

@@ -1,8 +1,12 @@
 ---
 title: Data Management
 ---
-import IndexOverviewList from '@site/src/components/IndexOverviewList';
 
+# Data Management
 
-The information on managing, recovering, and protecting your data in Databend Cloud:
-<IndexOverviewList />
+| Category | Description | Key Features | Common Operations | Documentation |
+|----------|-------------|--------------|------------------|---------------|
+| **Data Lifecycle** | Create and manage objects | • Database & Table <br/>• External Tables<br/>• Streams & Views<br/>• Indexes & Stages | • CREATE/DROP/ALTER<br/>• SHOW TABLES<br/>• DESCRIBE TABLE | [Details](./01-data-lifecycle.md) |
+| **Data Recovery** | Access and restore past data | • Time Travel<br/>• Flashback Tables<br/>• Backup & Restore<br/>• AT & UNDROP | • SELECT ... AT<br/>• FLASHBACK TABLE<br/>• BENDSAVE BACKUP | [Details](./02-data-recovery.md) |
+| **Data Protection** | Secure access and prevent loss | • Network Policies<br/>• Access Control<br/>• Time Travel & Fail-safe<br/>• Data Encryption | • NETWORK POLICY<br/>• GRANT/REVOKE<br/>• CREATE USER/ROLE | [Details](./03-data-protection.md) |
+| **Data Purge** | Free up storage space | • VACUUM Commands<br/>• Retention Policies<br/>• Orphan File Cleanup<br/>• Temporary File Management | • VACUUM TABLE<br/>• VACUUM DROP TABLE<br/>• DATA_RETENTION_TIME | [Details](./04-data-recycle.md) |